A charging device and an energy supply device

Abstract

The present invention provides a charging device and an energy supply device. The charging device includes: a power interface for obtaining external power; a charging unit electrically connected to the power interface; and at least one charger, which is detachably connected to the charging unit and can charge a battery pack. Compared with the prior art, the charging device of the present invention can not only charge multiple battery packs, but also take out the charger and the battery pack as a whole to charge the battery pack separately through the charger.

Description

Technical Field

[0001] The present invention relates to a charging device and an energy supply device having the charging device. Background Art

[0002] With the development of the economy, household power tools have entered thousands of households. Even, many users own multiple power tools at the same time, such as: hair dryers, chain saws, electric drills, etc. These power tools are all equipped with one or more battery packs. However, existing chargers can usually only charge a single battery pack and cannot charge multiple battery packs simultaneously, so that users need to spend a long time charging the battery packs one by one every time they finish using the power tools. Secondly, when users are working outdoors, they occasionally need to use tools other than power tools, and at this time, emergency alternating current is required. However, since mains electricity cannot be obtained outdoors, it brings inconvenience to users.

[0003] In view of the above problems, it is necessary to provide a new charging device to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a charging device which can not only charge multiple battery packs simultaneously, thus shortening the waiting time of users and improving the charging efficiency, but also, in extreme cases, can take out the charger and the battery packs inserted in the charger as a whole, so as to charge the battery packs separately through the charger.

[0005] To achieve the above object, the present invention provides a charging device, including: a power interface for obtaining external power; a charging part electrically connected to the power interface; and at least one charger detachably connected to the charging part and capable of charging at least one battery pack.

[0006] As a further improvement of the present invention, the charging device further includes: an output part for outputting power externally; an inversion unit for inverting the power obtained by the charging part from the battery pack through the charger into alternating current and outputting it through the output part; and a control unit. When the power interface is connected to external power, the control unit controls the charging part to supply power to the charger; when the power interface is disconnected from external power, the control unit controls the inversion unit to work to output the power obtained by the charging part from the battery pack through the charger through the output part.

[0007] As a further improvement of the present invention, the output part includes an alternating current output interface and a direct current output interface.

[0008] As a further improvement of the present invention, the charging part includes a base for carrying a battery pack. The base is provided with a first docking interface adapted to the battery pack and a receiving groove for receiving the first docking interface. When the first docking interface is docked with the battery pack, the first docking interface protrudes from the receiving groove. When the first docking interface is not in operation, the first docking interface is received in the receiving groove.

[0009] As a further improvement of the present invention, the first docking interface is pivotally mounted in the receiving groove. When the first docking interface is docked with the battery pack, the first docking interface is rotated so that the first docking interface is perpendicular to the base and protrudes from the receiving groove. When the first docking interface is not in operation, the first docking interface is rotated so that the first docking interface is parallel to the base and is received in the receiving groove.

[0010] As a further improvement of the present invention, the charging device is further provided with a second docking interface. The charger is provided with a second docking port adapted to the second docking interface, so that the charger obtains power from the charging device and charges the battery pack inserted into the charger.

[0011] As a further improvement of the present invention, the charging part includes a base for carrying a battery pack. The second docking interface is a first conductive terminal and is disposed on the base.

[0012] As a further improvement of the present invention, the second docking interface is further provided with a first elastic element adapted to the first conductive terminal. When the charger is placed on the base, the second conductive terminal abuts against the first conductive terminal, causing the first elastic element to undergo elastic deformation.

[0013] As a further improvement of the present invention, the base is provided with a first slide rail, and the charger is provided with a second slide rail adapted to the first slide rail, so that the charger is slidably inserted into the charging part through the cooperation of the first slide rail and the second slide rail.

[0014] As a further improvement of the present invention, the first slide rail is provided with a microswitch. When the second slide rail is slidably inserted into the first slide rail, the second slide rail abuts against the microswitch, and at this time, the control unit controls the charging device to supply power to the second docking interface.

[0015] As a further improvement of the present invention, the first slide rail is a guide groove, and the microswitch is disposed in the guide groove. The second slide rail is a guide rail adapted to the guide groove.

[0016] As a further improvement of the present invention, the opening direction of the guide groove is parallel to the base, so that the guide groove can limit the charger in a direction perpendicular to the base.

[0017] As a further improvement of the present invention, the base is further provided with a guiding groove, and the charger is provided with a supporting foot; when the charger is slidably inserted into the charging part, the supporting foot slides along the guiding groove.

[0018] As a further improvement of the present invention, the charging part includes a base for carrying a battery pack, and the second docking interface is a socket and is arranged on the base.

[0019] As a further improvement of the present invention, the charging part includes a base for carrying a battery pack; the charging device further includes a housing, the housing includes a side wall perpendicular to the base, and the second docking interface is a socket and is arranged on the side wall.

[0020] As a further improvement of the present invention, the charger includes a base and a supporting part mounted on the base; the base is provided with a plurality of charging positions, and the charging positions are distributed around the supporting part; the supporting part is provided with a first heat dissipation unit for dissipating heat from the battery pack inserted into the charger.

[0021] As a further improvement of the present invention, the supporting part includes a first wall facing the battery pack and a second wall located between adjacent charging positions; the first wall is provided with a first ventilation opening, and the second wall is provided with a second ventilation opening corresponding to the first ventilation opening; the first heat dissipation unit drives air to flow in from one of the first ventilation opening and the second ventilation opening and flow out from the other.

[0022] As a further improvement of the present invention, a control circuit and a second heat dissipation unit for dissipating heat from the control circuit are arranged in the base; the base is further provided with an air inlet and an air outlet corresponding to the air inlet; the second heat dissipation unit drives air flow to flow in from the air inlet and flow out from the air outlet, so as to dissipate heat from the control circuit.

[0023] As a further improvement of the present invention, a heat sink for assisting in dissipating heat from the control circuit is further arranged in the base; the air flow direction of the air inlet and the air outlet is parallel to the heat sink.

[0024] As a further improvement of the present invention, the charging device is further provided with a display unit for displaying charging and discharging information of the battery pack.

[0025] The present invention also discloses an energy supply device, including a battery pack and the aforementioned charging device.

[0026] The beneficial effects of the present invention are as follows: The charging device of the present invention can not only charge multiple battery packs simultaneously, thereby shortening the waiting time of users and improving the charging efficiency, but also invert the power in the battery packs into alternating current, thus solving the problem that users need an emergency power supply outdoors; at the same time, in extreme cases, the charger and the battery packs inserted in the charger can be taken out as a whole, so that the battery packs can be charged separately through the charger. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective structural view of the charging device of the present invention.

[0028] Figure 2 is a perspective view of the charging device of the present invention after removing the top cover and the charger.

[0029] Figure 3A is Figure 2 a partial enlarged view of

[0030] Figure 3B is Figure 1 a schematic diagram when the first docking interface of the charging device shown is erected.

[0031] Figure 3C is Figure 1 a schematic diagram when the first docking interface of the charging device shown is docked with a battery pack.

[0032] Figure 4 is Figure 2 a cross-sectional view along direction CC.

[0033] Figure 5 is a perspective view of the charger.

[0034] Figure 6 is Figure 5 a perspective view of the charger shown from another angle.

[0035] Figure 7 is Figure 6 a perspective exploded view of the charger shown.

[0036] Figure 8 is a perspective view of the charging device of the second embodiment of the present invention after removing the charger.

[0037] Figure 9 is a schematic diagram of the charger of the second embodiment of the present invention.

[0038] Figure 10 is a perspective view of the charging device of the third embodiment of the present invention after removing the charger.

[0039] Figure 11 is a schematic diagram of the charger of the third embodiment of the present invention.

[0040] Figure 12 It is a three-dimensional schematic diagram of the energy supply device of the present invention. Specific embodiments

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Please refer to Figure 1 and Figure 2 As shown, the present invention discloses a charging device 100 for charging a battery pack, and at the same time, it can also obtain electric power from the battery pack and invert it into alternating current for output for users to use. The charging device 100 includes a housing 10, a charging unit 20 housed in the housing 10, an output unit 30, an inversion unit (not shown), a control unit (not shown), and a charger 40 cooperating with the charging unit 20.

[0043] Please refer to Figure 1 and Figure 2As shown, the housing 10 includes a base 11 and a top cover 12 pivotally mounted on the base 11. The base 11 includes a bottom wall 111, a top wall 112 disposed opposite to the bottom wall 111, a side wall 113 perpendicular to the bottom wall 111, and a control board 114 located between the bottom wall 111 and the top wall 112. The bottom wall 111, the top wall 112, the side wall 113, and the control board 114 together enclose a receiving cavity 115 to receive at least one circuit board. The circuit board is provided with the inverter unit, the control unit, and so on. The side wall 113 is provided with ventilation holes 1131 and a power interface 1132. The ventilation holes 1131 communicate with the receiving cavity 115 to dissipate heat from the components located in the receiving cavity 115. The power interface 1132 is used to obtain external power, such as mains power. The control board 114 is inclined for easy user operation. The control board 114 is provided with a power switch 1141, a control switch 1142, and a display unit 1143. The power switch 1141 is used to control the connection and disconnection between the charging device 100 and the power interface 1132. When the power interface 1132 is connected to the mains power, if the power switch 1141 is turned on, the charging device 100 can obtain mains power through the power interface 1132; if the power switch 1141 is turned off, the charging device 100 cannot obtain mains power through the power interface 1132. The control switch 1142 includes a WIFI switch a, a USB switch b, a BC switch c, and an AC switch d. The WIFI switch a is used to turn on the WIFI network to connect to the network through WIFI, so as to exchange data with the cloud. Further, the data exchange includes data upload, download, software update, and so on. When the USB switch b is turned on, the third output interface 33 can output direct current to the outside. When the BC switch c is turned on, the display unit 1143 displays the low battery information of the battery pack. When the AC switch d is turned on, the first output interface 31 can output alternating current to the outside. The display unit 1143 is used to display information such as battery pack charging and discharging, and the status information of the control switch 1142, and so on. The top cover 12 is pivotally mounted on the base 11. The top cover 12 cooperates with the base 11 to form a chamber to receive the charging part 20 and the charger 40. The top cover 12 is provided with a plurality of ventilation holes 121 to dissipate heat from the charging part 20, the charger 40, etc. located in the chamber.

[0044] Please refer to Figure 1 , Figure 2 and Figure 3AAs shown, the charging part 20 is installed on the top wall 112. In this embodiment, the number of the charging parts 20 is three. However, in practical applications, the number of the charging parts 20 can be set as required. The charging part 20 includes a base 21, a first docking interface 22 and a second docking interface 23 disposed on the base 21, and a guiding groove 24 disposed on the top wall 112. The base 21 is used to carry a charger 40 or a battery pack, and a receiving groove 211 for receiving the first docking interface 22 is disposed thereon. A first sliding rail 212 is disposed on the edge of the base 21. The first docking interface 22 is used to dock with the battery pack to charge the battery pack or obtain power from the battery pack. When it is necessary to dock the first docking interface 22 with the battery pack, the first docking interface 22 is set to protrude from the receiving groove 211 and be perpendicular to the base 21; when the first docking interface 22 is not docked with the battery pack, the first docking interface 22 is set to be received in the receiving groove 211. In this embodiment, the first docking interface 22 is pivotally installed in the receiving groove 211. Please refer to Figure 3B and Figure 3C As shown, when it is necessary to dock the first docking interface 22 with the battery pack, only need to rotate the first docking interface 22. At this time, the first docking interface 22 protrudes from the receiving groove 211 and is perpendicular to the base 21. When the first docking interface 22 is not docked with the battery pack, only need to reverse the first docking interface 22. At this time, the first docking interface 22 is received in the receiving groove 211 and is parallel to the base 21. In this embodiment, the number of the first docking interfaces 22 is two, and they are respectively located at the front and rear ends of the base 21. In this embodiment, the battery pack is set to be vertically inserted into the first docking interface 22. However, in other embodiments, the battery pack and the first docking interface 22 can also be set to be horizontally inserted and docked.

[0045] Please refer to Figure 1 and Figure 2As shown, the output unit 30 is disposed on the control board 114 for externally outputting power. The output unit 30 includes a first output interface 31, a second output interface 32, and a third output interface 33. The first output interface 31 and the second output interface 32 are used for outputting alternating current, and the third output interface 33 is used for outputting direct current. In this embodiment, the first output interface 31 is set to output 120V alternating current, the second output interface 32 is set to output 220V alternating current, and the third output interface 33 is set to output 5V direct current. Of course, in other embodiments, the output voltages of the first output interface 31, the second output interface 32, and the third output interface 33 can be set as required. In this embodiment, the third output interface 33 includes a USB2.0 interface, a USB3.0 interface, a Micro USB interface, and a Type-C interface. The inverter unit is configured to invert the power obtained by the first docking interface 22 from the battery pack into alternating current and output it through the output unit 30; or adjust the received alternating current and output it to the output unit 30.

[0046] Please refer to Figure 5 , Figure 6 and Figure 7As shown, the charger 40 is used to charge the battery pack. The charger 40 includes a base 41 and a support portion 42 mounted on the base 41. A plurality of charging positions 411 adapted to the battery pack are provided at the top of the base 41. The charging positions 411 are distributed around the support portion 42. In this embodiment, the number of the charging positions 411 is 2, and they are symmetrically distributed on both sides of the support portion 42, so that the two charging positions 411 and the support portion 42 are collinear. Of course, it can be understood that in other embodiments, the number of the charging positions 411 can be set as required. Preferably, when the number of the charging positions 411 is greater than 2, the charging positions 411 form a regular polygon and are distributed around the support portion 42. A second docking port 412 adapted to the second docking interface 23, a second slide rail 413 adapted to the first slide rail 212, and support feet 414 are provided at the bottom of the base 41. The second docking port 412 is docked with the second docking interface 23, so that the charger 40 obtains the power of the charging device 100 and charges the battery pack inserted into the charger 40. In this embodiment, the second docking interface 23 includes a first conductive terminal 231 and a first elastic element (not shown) adapted to the first conductive terminal 231. The second docking port 412 is a second conductive terminal adapted to the first conductive terminal 231. When the charger 40 is inserted into the charging portion 20, the second conductive terminal abuts against the first conductive terminal 231, and at this time, the first elastic element is elastically deformed under the action of the first conductive terminal 231. When the charger 40 is detached from the charging portion 20, the first conductive terminal 231 is reset under the action of the first elastic element. With such a setting, the first conductive terminal 231 can apply a certain force to the second conductive terminal, so as to ensure sufficient contact between the first conductive terminal 231 and the second conductive terminal and avoid poor contact. The second slide rail 413 is adapted to the first slide rail 212 to guide the charger 20 to slide and insert into the charging portion 20. Preferably, please refer to Figure 4As shown, the first slide rail 212 is further provided with a micro switch 2121. When the second slide rail 413 slides and inserts into the first slide rail 212, the second slide rail 413 abuts against the micro switch 2121. At this time, the control unit controls the charging device 100 to supply power to the second docking interface 23. When the second slide rail 413 withdraws from the first slide rail 212, the micro switch 2121 resets. At this time, the control unit controls the charging device 100 to stop supplying power to the second docking interface 23. With such a setting, the second docking interface 23 is powered on only when the charger 40 is inserted into the charging part 20, thereby effectively enhancing the safety of the charging device 100 and avoiding the danger of electric shock caused by the user accidentally touching the second docking interface 23. In this embodiment, the first slide rail 212 is a guide groove, and the second slide rail 413 is a guide rail that cooperates with the guide groove. Preferably, the opening direction AA of the guide groove is parallel to the base 21, so that the guide groove can limit the charger 40 in the direction BB perpendicular to the base 21. The support feet 414 cooperate with the guiding groove 24 and slide along the guiding groove 24. Preferably, in order to make the charger 40 balanced, the height of the support feet 414 is greater than the height of the second slide rail 413. A control circuit 415 and a second heat dissipation unit 416 for dissipating heat from the control circuit 415 are further provided in the base 41. In this embodiment, the second heat dissipation unit 416 is a cooling fan. An air inlet 417 and an air outlet 418 corresponding to the air inlet 417 are further provided on the side wall of the base 41. The cooling fan drives air flow to flow in from the air inlet 417 and flow out from the air outlet 418, thereby dissipating heat from the control circuit 415. Preferably, the cooling fan includes a first cooling fan 4161 near the air inlet 417 and a second cooling fan 4162 near the air outlet 418. With such a setting, the heat dissipation effect of the second heat dissipation unit 416 can be effectively enhanced. Further, a heat sink 419 for assisting in dissipating heat from the control circuit 415 is further provided in the base 41. The air flow direction of the air inlet 417 and the air outlet 418 is parallel to the heat sink 419.

[0047] Please refer to Figure 5 and Figure 7As shown, the support part 42 includes a first wall 421 facing the battery pack and a second wall 422 located between adjacent charging positions 411. The first wall 421 is provided with a first ventilation opening 4211, and the second wall 422 is provided with a second ventilation opening 4221 corresponding to the first ventilation opening 4211. A first heat dissipation unit 423 for dissipating heat from the battery pack inserted into the charger 40 is further provided inside the support part 42. In this embodiment, the first heat dissipation unit 423 is a ventilation fan. The first heat dissipation unit 423 drives air flow to flow between the first ventilation opening 4211 and the second ventilation opening 4221, so as to dissipate heat from the inserted battery pack.

[0048] When the power supply interface 1132 is connected to the mains power, first turn on the power switch 1141, and then insert the battery pack into the first docking interface 22. At this time, the control unit controls the first docking interface 22 to charge the battery pack. If the BC switch c is pressed, the display unit 1143 displays the power information of the battery pack. When the charger 40 with the battery pack inserted is inserted into the charging part 20, the control unit controls the charging device 100 to supply power to the charger 40 through the second docking interface 23 and the second docking port 412, so as to charge the battery pack inserted into the charger 40. At this time, if the BC switch c is pressed, the display unit 1143 displays the power information of the battery pack. When the power supply interface 1132 is disconnected from the mains power, the control unit controls the first docking interface 22 to obtain power from the battery pack, invert it into alternating current through the inverter unit, and then output the power to the outside through the output part 30. When the AC switch d is pressed, the first output interface 31 can output 120V alternating current to the outside, and the second output interface 32 can output 220V alternating current to the outside. When the USB switch b is pressed, the third output interface 33 can output 5V direct current to the outside.

[0049] Further, please refer to Figure 6 As shown, the charger 40 is further provided with a power input interface 43, so that the charger 40 can be directly connected to the mains power, so as to charge the battery pack inserted into the charger 40.

[0050] Compared with the prior art, the charging device 100 of the present invention can not only charge multiple battery packs simultaneously, thereby shortening the waiting time of users and improving the charging efficiency, but also invert the power in the battery pack into alternating current, thereby solving the problem that users need an emergency power supply outdoors. Secondly, since the charger 40 is detachably cooperated with the charging part 20, the user can conveniently take out the charger 40 and the battery pack inserted on the charger 40 as a whole, so that in extreme cases, the battery pack can be charged separately through the charger 40.

[0051] Figure 8 、 Figure 9 The charging device 200 of the second embodiment of the present invention is shown. The structure of the charging device 200 is substantially the same as that of the charging device 100, and the difference lies in that: the second docking interface 201 is a male socket, and the second docking port 202 is a female socket.

[0052] Figure 10 、 Figure 11 The charging device 300 of the third embodiment of the present invention is shown. The structure of the charging device 300 is substantially the same as that of the charging device 100, and the difference lies in that: the second docking interface 301 is arranged on the side wall 303 of the seat body 302, and the second docking port 304 is arranged on the side wall 306 of the charger 305. The second docking interface 301 and the second docking port 304 can be sockets or elastic conductive terminals.

[0053] Please refer to Figure 12 As shown, the present invention also discloses an energy supply device 400, including a battery pack 50 and the charging device 100 / 200 / 300.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A charging device, characterized in that, it includes: a power interface for obtaining external power; a charging part electrically connected to the power interface; at least one charger detachably connected to the charging part and capable of charging at least one battery pack; an output part for outputting power externally; an inversion unit for inverting the power obtained by the charging part from the battery pack through the charger into alternating current and outputting it through the output part; and a control unit; when the power interface is connected to external power, the control unit controls the charging part to supply power to the charger; when the power interface is disconnected from external power, the control unit controls the inversion unit to work to output the power obtained by the charging part from the battery pack through the charger through the output part; the charging part includes a base for carrying the battery pack, the base is provided with a first docking interface matching the battery pack and a receiving groove for receiving the first docking interface; when the first docking interface is docked with the battery pack, the first docking interface protrudes from the receiving groove; when the first docking interface is not working, the first docking interface is received in the receiving groove; the charging device is further provided with a second docking interface; the charger is provided with a second docking port matching the second docking interface so that the charger obtains power from the charging device and charges the battery pack inserted into the charger.

2. The charging device according to claim 1, characterized in that: the output part includes an alternating current output interface and a direct current output interface.

3. The charging device according to claim 1, characterized in that: the first docking interface is pivotally mounted in the receiving groove; when the first docking interface is docked with the battery pack, rotate the first docking interface so that the first docking interface is perpendicular to the base and protrudes from the receiving groove; when the first docking interface is not working, rotate the first docking interface so that the first docking interface is parallel to the base and is received in the receiving groove.

4. The charging device according to claim 1, characterized in that: the charging part includes a base for carrying the battery pack, and the second docking interface is a first conductive terminal and is arranged on the base.

5. The charging device according to claim 4, characterized in that: the second docking interface is further provided with a first elastic element matching the first conductive terminal; the second docking port is a second conductive terminal matching the first conductive terminal; when the charger is placed on the base, the second conductive terminal abuts against the first conductive terminal and causes the first elastic element to undergo elastic deformation.

6. The charging device according to claim 4, characterized in that: the base is provided with a first sliding rail, and the charger is provided with a second sliding rail matching the first sliding rail, so that the charger is slidably inserted into the charging part through the cooperation of the first sliding rail and the second sliding rail.

7. The charging device according to claim 6, characterized in that: The first slide rail is provided with a microswitch; when the second slide rail slides and inserts into the first slide rail, the second slide rail abuts against the microswitch, and at this time, the control unit controls the charging device to supply power to the second docking interface.

8. The charging device according to claim 7, wherein: The first slide rail is a guide groove, and the microswitch is arranged in the guide groove; the second slide rail is a guide rail that cooperates with the guide groove.

9. The charging device according to claim 8, wherein: The opening direction of the guide groove is parallel to the base, so that the guide groove can limit the charger in a direction perpendicular to the base.

10. The charging device according to claim 6, wherein: The base is further provided with a guiding groove, and the charger is provided with a supporting foot; when the charger slides and inserts into the charging part, the supporting foot slides along the guiding groove.

11. The charging device according to claim 1, wherein: The charging part includes a base for carrying the battery pack, and the second docking interface is a socket and is arranged on the base.

12. The charging device according to claim 1, wherein: The charging part includes a base for carrying the battery pack; the charging device further includes a housing, the housing includes a side wall perpendicular to the base, and the second docking interface is a socket and is arranged on the side wall.

13. The charging device according to claim 1, wherein: The charger includes a base and a supporting part mounted on the base; the base is provided with a plurality of charging positions, and the charging positions are distributed around the supporting part; the supporting part is provided with a first heat dissipation unit for dissipating heat from the battery pack inserted into the charger.

14. The charging device according to claim 13, wherein: The supporting part includes a first wall facing the battery pack and a second wall located between adjacent charging positions; the first wall is provided with a first ventilation opening, and the second wall is provided with a second ventilation opening corresponding to the first ventilation opening; the first heat dissipation unit drives air to flow in from one of the first ventilation opening and the second ventilation opening and flow out from the other.

15. The charging device according to claim 14, wherein: A control circuit and a second heat dissipation unit for dissipating heat from the control circuit are arranged in the base; the base is further provided with an air inlet and an air outlet corresponding to the air inlet; the second heat dissipation unit drives air to flow in from the air inlet and flow out from the air outlet, so as to dissipate heat from the control circuit.

16. The charging device according to claim 15, wherein: A heat sink for assisting in dissipating heat from the control circuit is further arranged in the base; the air flow direction of the air inlet and the air outlet is parallel to the heat sink.

17. The charging device according to claim 1, wherein: The charging device is further provided with a display unit for displaying battery pack charging and discharging information.

18. An energy supply device, characterized in that, comprising: a battery pack; and the charging device according to any one of claims 1 to 17.

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